keyword
MENU ▼
Read by QxMD icon Read
search

plant hypoxia

keyword
https://www.readbyqxmd.com/read/28087771/genome-wide-convergence-during-evolution-of-mangroves-from-woody-plants
#1
Shaohua Xu, Ziwen He, Zixiao Guo, Zhang Zhang, Gerald J Wyckoff, Anthony Greenberg, Chung-I Wu, Suhua Shi
When living organisms independently invade a new environment, the evolution of similar phenotypic traits is often observed. An interesting but contentious issue is whether the underlying molecular biology also converges in the new habitat. Independent invasions of tropical intertidal zones by woody plants, collectively referred to as mangrove trees, represent some dramatic examples. The high salinity, hypoxia and other stressors in the new habitat might have affected both genomic features and protein structures...
January 12, 2017: Molecular Biology and Evolution
https://www.readbyqxmd.com/read/28079178/significance-of-oxygen-transport-through-aquaporins
#2
Janusz J Zwiazek, Hao Xu, Xiangfeng Tan, Alfonso Navarro-Ródenas, Asunción Morte
Aquaporins are membrane integral proteins responsible for the transmembrane transport of water and other small neutral molecules. Despite their well-acknowledged importance in water transport, their significance in gas transport processes remains unclear. Growing evidence points to the involvement of plant aquaporins in CO2 delivery for photosynthesis. The role of these channel proteins in the transport of O2 and other gases may also be more important than previously envisioned. In this study, we examined O2 permeability of various human, plant, and fungal aquaporins by co-expressing heterologous aquaporin and myoglobin in yeast...
January 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28072536/role-of-ionic-strength-and-ph-in-modulating-thermodynamic-profiles-associated-with-co-escape-from-rice-nonsymbiotic-hemoglobin-1
#3
David Butcher, Sophie Bernad, Valerie Derrien, Pierre Sebban, Jaroslava Miksovska
Type 1 nonsymbiotic hemoglobins are found in a wide variety of land plants and exhibit very high affinities for exogenous gaseous ligands. These proteins are presumed to have a role in protecting plant cells from oxidative stress under etiolated/hypoxic conditions through NO dioxygenase activity. In this study we have employed photoacoustic calorimetry, time-resolved absorption spectroscopy, and classical molecular dynamics simulations in order to elucidate thermodynamics, kinetics, and ligand migration pathways upon CO photodissociation from WT and a H73L mutant of type 1 nonsymbiotic hemoglobin from Oryza sativa (rice)...
January 19, 2017: Journal of Physical Chemistry. B
https://www.readbyqxmd.com/read/28068279/identifying-predictors-of-central-sleep-apnea-cheyne-stokes-breathing-in-chronic-heart-failure-a-pathophysiological-approach
#4
Aneliya I Draganova, Kiril V Terziyski, Stefan S Kostianev
Chronic heart failure (CHF) is a major health problem associated with increased mortality, despite modern treatment options. Central sleep apnea (CSA)/Cheyne-Stokes breathing (CSB) is a common and yet largely under-diagnosed co-morbidity, adding significantly to the poor prognosis in CHF because of a number of acute and chronic effects, including intermittent hypoxia, sympathetic overactivation, disturbed sleep architecture and impaired physical tolerance. It is characterized by repetitive periods of crescendo-decrescendo ventilatory pattern, alternating with central apneas and hypopneas...
December 1, 2016: Folia Medica
https://www.readbyqxmd.com/read/28029095/sumoylation-of-nav1-2-channels-mediates-the-early-response-to-acute-hypoxia-in-central-neurons
#5
Leigh D Plant, Jeremy D Marks, Steven An Goldstein
The mechanism for the earliest response of central neurons to hypoxia-an increase in voltage-gated sodium current (INa)-has been unknown. Here, we show that hypoxia activates the Small Ubiquitin-like Modifier (SUMO) pathway in rat cerebellar granule neurons (CGN) and that SUMOylation of NaV1.2 channels increases INa. The time-course for SUMOylation of single NaV1.2 channels at the cell surface and changes in INa coincide, and both are prevented by mutation of NaV1.2-Lys38 or application of a deSUMOylating enzyme...
December 28, 2016: ELife
https://www.readbyqxmd.com/read/28010170/are-avoidance-and-acclimation-responses-during-hypoxic-stress-modulated-by-distinct-cell-specific-mechanisms
#6
Mohamed M Mira, Eman A El-Khateeb, Hannan I SayedAhmed, Robert D Hill, Claudio Stasolla
Plants respond to hypoxic stress through either acclimation to the stress or avoidance of it, as they do to most environmental stresses. The hypothesis that has general consensus amongst the community is that ethylene response factors (ERFs) are central elements that control both types of responses to hypoxia. Recent studies suggest that this may not be the case for all cells experiencing hypoxic stress. Mature maize root cells undergoing hypoxic stress were found to undergo acclimation and avoidance mechanisms involving ERFs, whereas meristematic root cells and cells still undergoing differentiation acclimated to the response without the involvement of ethylene synthesis or ERFs...
December 23, 2016: Plant Signaling & Behavior
https://www.readbyqxmd.com/read/27995331/erf73-hre1-is-involved-in-h2o2-production-via-hypoxia-inducible-rboh-gene-expression-in-hypoxia-signaling
#7
Chin-Ying Yang, Yi-Chun Huang, Shang-Ling Ou
Hypoxia deprives cells of energy and induces severe physical damage in embryophytes. Under hypoxia, the equilibrium between ethylene and H2O2 affects the response of the transcription factor AtERF73/HRE1. To evaluate the role of AtERF73/HRE1 during hypoxia signaling, we used three independent AtERF73/HRE1 knockout lines to detect H2O2 accumulation. The results revealed that under hypoxia, H2O2 accumulation in the AtERF73/HRE1 knockout lines decreased, indicating that AtERF73/HRE1 uses a negative feedback regulation mechanism to influence the production of H2O2 induced through hypoxia signal transduction...
December 19, 2016: Protoplasma
https://www.readbyqxmd.com/read/27994500/resveratrol-alleviate-hypoxic-pulmonary-hypertension-via-anti-inflammation-and-anti-oxidant-pathways-in-rats
#8
Dunquan Xu, Yan Li, Bo Zhang, Yanxia Wang, Yi Liu, Ying Luo, Wen Niu, Mingqing Dong, Manling Liu, Haiying Dong, Pengtao Zhao, Zhichao Li
Resveratrol, a plant-derived polyphenolic compound and a phytoestrogen, was shown to possess multiple protective effects including anti-inflammatory response and anti-oxidative stress. Hypoxic pulmonary hypertension (HPH) is a progressive disease characterized by sustained vascular resistance and marked pulmonary vascular remodeling. The exact mechanisms of HPH are still unclear, but inflammatory response and oxidative stress was demonstrated to participate in the progression of HPH. The present study was designed to investigate the effects of resveratrol on HPH development...
2016: International Journal of Medical Sciences
https://www.readbyqxmd.com/read/27991916/the-hif-phf8-ar-axis-promotes-prostate-cancer-progression
#9
D Tong, Q Liu, G Liu, W Yuan, L Wang, Y Guo, W Lan, D Zhang, S Dong, Y Wang, H Xiao, J Mu, C Mao, J Wong, J Jiang
Recent studies provide strong evidence that the androgen receptor (AR) signaling pathway remains active in castration-resistant prostate cancer (CRPC). However, the underlying mechanisms are not well understood. In this study, we demonstrate that plant homeo domain finger protein 8 (PHF8 )interacts with and functions as an essential histone demethylase activity-dependent AR coactivator. Furthermore, we demonstrate that the expression of PHF8 is induced by hypoxia in various prostate cancer cell lines. Knockdown of either hypoxia-inducible factor HIF2α or HIF1α almost completely abolished hypoxia-induced PHF8 expression...
December 19, 2016: Oncogenesis
https://www.readbyqxmd.com/read/27986423/learning-to-breathe-developmental-phase-transitions-in-oxygen-status
#10
REVIEW
Michael J Considine, Pedro Diaz-Vivancos, Pavel Kerchev, Santiago Signorelli, Patricia Agudelo-Romero, Daniel J Gibbs, Christine H Foyer
Plants are developmentally disposed to significant changes in oxygen availability, but our understanding of the importance of hypoxia is almost entirely limited to stress biology. Differential patterns of the abundance of oxygen, nitric oxide ((•)NO), and reactive oxygen species (ROS), as well as of redox potential, occur in organs and meristems, and examples are emerging in the literature of mechanistic relationships of these to development. We describe here the convergence of these cues in meristematic and reproductive tissues, and discuss the evidence for regulated hypoxic niches within which oxygen-, ROS-, (•)NO-, and redox-dependent signalling curate developmental transitions in plants...
December 13, 2016: Trends in Plant Science
https://www.readbyqxmd.com/read/27956097/binding-studies-and-biological-evaluation-of-%C3%AE-carotene-as-a-potential-inhibitor-of-human-calcium-calmodulin-dependent-protein-kinase-iv
#11
Huma Naz, Parvez Khan, Mohd Tarique, Safikur Rahman, Abha Meena, Shahzaib Ahamad, Suaib Luqman, Asimul Islam, Faizan Ahmad, Md Imtaiyaz Hassan
Human calcium/calmodulin-dependent protein kinase IV (CAMKIV), a member of Ser/Thr kinase family, is associated with cancer, cerebral hypoxia and neurodegenerative diseases. β-carotene is a colored organic compound, abundant in plants and fruits and is used in cancer prevention. Here, we report a strong binding affinity of β-carotene with CAMKIV using molecular docking, fluorescence binding and isothermal titration calorimetry methods. Furthermore, β-carotene also reduces the enzyme activity of CAMKIV moderately as observed during ATPase assay...
December 9, 2016: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/27869215/crosstalk-between-sugarcane-and-a-plant-growth-promoting-burkholderia-species
#12
Chanyarat Paungfoo-Lonhienne, Thierry G A Lonhienne, Yun Kit Yeoh, Bogdan C Donose, Richard I Webb, Jeremy Parsons, Webber Liao, Evgeny Sagulenko, Prakash Lakshmanan, Philip Hugenholtz, Susanne Schmidt, Mark A Ragan
Bacterial species in the plant-beneficial-environmental clade of Burkholderia represent a substantial component of rhizosphere microbes in many plant species. To better understand the molecular mechanisms of the interaction, we combined functional studies with high-resolution dual transcriptome analysis of sugarcane and root-associated diazotrophic Burkholderia strain Q208. We show that Burkholderia Q208 forms a biofilm at the root surface and suppresses the virulence factors that typically trigger immune response in plants...
November 21, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27866977/the-anti-hyperplasia-anti-oxidative-and-anti-inflammatory-properties-of-qing-ye-dan-and-swertiamarin-in-testosterone-induced-benign-prostatic-hyperplasia-in-rats
#13
Xinying Wu, Ye Gu, Lun Li
Qing Ye Dan (QYD) is the whole plant of Swertia mileensis and used in Chinese folk medicine for the treatment of prostatitis, benign prostatic hyperplasia (BPH) and so on. This study was to investigate the effects of QYD and its main component swertiamarin on BPH induced by testosterone in rats. The prostatic expressions of vascular endothelial growth factor (VEGF), epidermal growth factor (EGF), basic fibroblast growth factor (βFGF) and proliferating cell nuclear antigen (PCNA) were detected by immunohistochemistry assay...
January 4, 2017: Toxicology Letters
https://www.readbyqxmd.com/read/27859406/meeting-report-processing-translation-decay-three-ways-to-keep-rna-sizzling
#14
Albrecht G von Arnim, Hanjo A Hellmann
This meeting report highlights key trends that emerged from a conference entitled Post-Transcriptional Gene Regulation in Plants, which was held 14-15 July 2016, as a satellite meeting of the annual meeting of the American Society of Plant Biologists in Austin, Texas. The molecular biology of RNA is emerging as an integral part of the framework for plants' responses to environmental challenges such as drought and heat, hypoxia, nutrient deprivation, light and pathogens. Moreover, the conference illustrated how a multitude of customized and pioneering omics-related technologies are being applied, more and more often in combination, to describe and dissect the complexities of gene expression at the post-transcriptional level...
December 2016: Plant, Cell & Environment
https://www.readbyqxmd.com/read/27856303/effects-of-tibetan-turnip-brassica-rapa-l-on-promoting-hypoxia-tolerance-in-healthy-humans
#15
Bingquan Chu, Chun Chen, Jiaojie Li, Xiaojian Chen, Yunhong Li, Weimin Tang, Lu Jin, Ying Zhang
ETHNOPHARMACOLOGICAL RELEVANCE: Tibetan turnip (Brassica rapa L.), widely distributed in Tibet region, is an edible and medical plant with effects of "tonic and anti-hypoxia" "heat-clearing and detoxification" and "alleviating fatigue" according to traditional Tibetan medical books. AIM OF THE STUDY: This research systematically studied the effects of Tibetan turnip on promoting hypoxia-tolerance in humans and the mechanisms. MATERIALS AND METHODS: A 7-d, self-control and single-blind human feeding trial was conducted among 27 healthy subjects with 8 males and 10 females in feeding group fed with 7...
January 4, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/27836782/role-of-hxkc-a-mitochondrial-hexokinase-like-protein-in-fungal-programmed-cell-death
#16
Margaret E Katz, Katharyn S Braunberger, Joan M Kelly
Apoptosis is a form of programmed cell death (PCD) that occurs during animal development and is also triggered by a variety of signals including nutrient or oxidative stress, hypoxia, DNA damage, viral infection and oncogenic transformation. Though apoptotic-like PCD also occurs in plants and fungi, genes encoding several of the key players in mammalian apoptosis (p53 and BH-domain proteins) have not been identified in these kingdoms. In this report we investigated whether HxkC, a mitochondrial hexokinase-like protein, and XprG, a putative p53-like transcription factor similar to Ndt80, play a role in programmed cell death in the filamentous fungus Aspergillus nidulans...
December 2016: Fungal Genetics and Biology: FG & B
https://www.readbyqxmd.com/read/27835985/hypoxia-response-in-arabidopsis-roots-infected-by-plasmodiophora-brassicae-supports-the-development-of-clubroot
#17
Antoine Gravot, Gautier Richard, Tanguy Lime, Séverine Lemarié, Mélanie Jubault, Christine Lariagon, Jocelyne Lemoine, Jorge Vicente, Alexandre Robert-Seilaniantz, Michael J Holdsworth, Maria J Manzanares-Dauleux
BACKGROUND: The induction of alcohol fermentation in roots is a plant adaptive response to flooding stress and oxygen deprivation. Available transcriptomic data suggest that fermentation-related genes are also frequently induced in roots infected with gall forming pathogens, but the biological significance of this induction is unclear. In this study, we addressed the role of hypoxia responses in Arabidopsis roots during infection by the clubroot agent Plasmodiophora brassicae. RESULTS: The hypoxia-related gene markers PYRUVATE DECARBOXYLASE 1 (PDC1), PYRUVATE DECARBOXYLASE 2 (PDC2) and ALCOHOL DEHYDROGENASE 1 (ADH1) were induced during secondary infection by two isolates of P...
November 11, 2016: BMC Plant Biology
https://www.readbyqxmd.com/read/27810366/comparative-transcriptome-analyses-of-a-mangrove-tree-sonneratia-caseolaris-and-its-non-mangrove-relatives-trapa-bispinosa-and-duabanga-grandiflora
#18
Jianfang Li, Yuchen Yang, Shuhuan Yang, Zhang Zhang, Sufang Chen, Cairong Zhong, Renchao Zhou, Suhua Shi
Mangroves are a group of unique plants anchoring in and well adapting to the extreme intertidal environment with high salinity, hypoxia and high temperature and ultraviolet (UV) radiation. Sonneratia caseolaris is a major mangrove tree widely distributed across the West-Indo Pacific region, however the genetic mechanisms of its adaptive evolution are still unclear. In the present study, we performed comparative transcriptome analyses between S. caseolaris and its two non-mangrove relatives, Trapa bispinosa and Duabanga grandiflora, to better understand the evolutionary adaptation of S...
October 31, 2016: Marine Genomics
https://www.readbyqxmd.com/read/27793783/cardenolides-from-calotropis-gigantea-as-potent-inhibitors-of-hypoxia-inducible-factor-1-transcriptional-activity
#19
Supawadee Parhira, Guo-Yuan Zhu, Ming Chen, Li-Ping Bai, Zhi-Hong Jiang
ETHNOPHARMACOLOGICAL RELEVANCE: Calotropis gigantea (L.) Dryand (Apocynaceae) is a medicinal plant native to southern China, India and Southeast Asia. It has been traditionally used for the treatment of several diseases including cancers in these countries. AIM OF THE STUDY: This study aimed to isolate bioactive cardenolides from C. gigantea, to screen their hypoxia-inducible factor (HIF-) 1 inhibitory activity, and to analyze the structure-activity relationship (SAR)...
December 24, 2016: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/27792901/improving-stomatal-functioning-at-elevated-growth-air-humidity-a-review
#20
REVIEW
Dimitrios Fanourakis, Dimitrios Bouranis, Habtamu Giday, Dália R A Carvalho, Abdolhossein Rezaei Nejad, Carl-Otto Ottosen
Plants grown at high relative air humidity (RH≥85%) are prone to lethal wilting upon transfer to conditions of high evaporative demand. The reduced survival of these plants is related to (i) increased cuticular permeability, (ii) changed anatomical features (i.e., longer pore length and higher stomatal density), (iii) reduced rehydration ability, (iv) impaired water potential sensitivity to leaf dehydration and, most importantly, (v) compromised stomatal closing ability. This review presents a critical analysis of the strategies which stimulate stomatal functioning during plant development at high RH...
December 1, 2016: Journal of Plant Physiology
keyword
keyword
65066
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"